MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' highlights the use of compromised sites for hosting. These findings strongly suggest the document's purpose is to facilitate phishing or malware distribution through malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://krisoc.ru/uplcv?utm_term=manual+drain+snake+harbor+freight PDF link annotation
- https://dla-pracownika.pl/pliki_user/File/dafiju.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606d26b0c0301---49343548949.pdfIn PDF document text
- https://soechi.id/userfiles/file/58346397790.pdfIn PDF document text
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b274e6aed6---xafimidapotasalosesapudob.pdfIn PDF document text
- http://burrburroughsfamily.com/clients/55468/File/mirax.pdfIn PDF document text
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/l1d3q82sm0eqjer633mu57lvl1/86417576862.pdfIn PDF document text
- http://bigcool.net/webroot/img/files/talufifemogifawewadunifu.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f9eecb927---tikotodudonukoxexakolu.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b1d35b79b---jivade.pdfIn PDF document text
- https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/f5d739f5622e667d9b31ce3460323bd8/nugarapa.pdfIn PDF document text
- https://taxfirma.com/userfiles/file/siwupukavilojolojijiba.pdfIn PDF document text
- https://suma.ca/upload/editor/file/8242351867.pdfIn PDF document text
- http://geasit.it/userfiles/files/vukaliwusafarufobena.pdfIn PDF document text
- http://odpadykj.cz/UserFiles/File/kodupik.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608135f4be9a1---14564076310.pdfIn PDF document text
- https://ive-cal.it/file/zopeduwirudojem.pdfIn PDF document text
- http://vetsnab32.ru/userfiles/file/13962716142.pdfIn PDF document text
- https://savitravel.ro/ckfinder/userfiles/files/wukakit.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e5f2894c6---jilozudesokujimu.pdfIn PDF document text
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160919b587feb2---jasogu.pdfIn PDF document text
- http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8264dea65---42500867966.pdfIn PDF document text
- http://rosswellbulldogs.com/clients/b/be/bee1e50a814ad4ba40998340b8964064/File/wabibowofelojezu.pdfIn PDF document text
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/9ba8037b4677c1ff8714013e0bc71b38/60987588068.pdfIn PDF document text
- http://uniquehotelsolutions.com/files/others/66907296036.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e41a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE41A | 18224 bytes |
SHA-256: 63b2041a0e69ffc7b57c3a0f68e08bc8fc308d9db837cbd325509cc96ab605ed |
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font_01_sfnt_off000112dc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112DC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012af3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AF3 | 10956 bytes |
SHA-256: d763886a8b6a265843d3cde8b3d24df828615c3cd582d8c3846be4dd000fa14f |
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